I don't really know what to tell you. But it sounds like you replaced your other addictions with fasting. Possibly an eating disorder too because you fast and then binge. Try googling "Binge eating disorder" because it sounds like that.
In your case the hypothyroidism might actually be fixable. All that fasting slows your thyroid down and does kill your metabolism, which would make the numbers on the lab work show "hypo". Maybe eating normal/healthy and doing a do a few Liver Flushes it might make it work normal again.
A raw diet might help and make you feel "cleaner" if that's what you're going for with doing the Master-Cleanse so many times.